BREVARD COUNTY, Fla. – An off-duty Brevard County deputy accused of mistakenly shooting and killing his roommate, a fellow deputy, as the two took a break from playing an online game with friends made his first appearance in court Monday.According to the affidavit, Lawson believed the gun was unloaded and “jokingly” pointed it at Walsh, pulling the trigger.Lawson said “he still believed the firearm was unloaded but should have known the magazine containing ammunition was possibly in the firearm by the weight of the gun,” according to the affidavit.“Folks, this unnecessary and totally avoidable incident not only took the life of an amazing young man and deputy, but it has also forever changed the life of another good young man who made an extremely poor and reckless decision,” Ivey said.In the weeks and months ahead, senior prosecutors will receive and carefully review the final investigative reports from the Palm Bay Police, Florida Department of Law Enforcement, and the Brevard County Medical Examiner."